OK, I've carefully studied all the pages and still don't understand it: how does Mari untie / unzip / remove her brassiere? There aren't fasteners / claps both in front and on the back. Does she just pull it over the head?
@jdjohndoe13 yeah it looks like a basic sports bra, which you can usually just pull up over your head. Having clips and stuff would be bothersome while exercising after all.